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Marketable Securities, Margin Loan and Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2013
Marketable Securities, Margin Loan and Fair Value Measurements [Abstract]  
Summary of Available for Sale Securities

The following is a summary of the Company's available for sale securities as of the dates indicated:

 

    As of June 30, 2013  
    Adjusted Cost     Gross Unrealized Gains     Gross Unrealized Losses     Fair Value  
Equity Securities   $ 7,735     $ 99     $ -     $ 7,834  

 

    As of December 31, 2012  
    Adjusted Cost     Gross Unrealized Gains     Gross Unrealized Losses     Fair Value  
Equity Securities   $ 7,915     $ 229     $ -     $ 8,144